package com.cals;

/*
要写注释哦!!!
*/
public class Demo1 {
    public static void main(String[] args) {
        int a = 10;
        int b = 4;
        System.out.println(a + b);
        System.out.println(a - b);
        System.out.println(a * b);
        System.out.println(a * 1.0 / b);
        System.out.println(a / b * 1.0);
        System.out.println(a % b);
        int c=5;
        int d=a++ - --a;
        System.out.println(d);
        System.out.println(c);
        System.out.println(5/6);
    }
}
